| Participant | Organization |
| Andreas Albrecht | UC Davis |
| Steven Allen | KIPAC/SLAC; Stanford |
| Mr. Randy Avera | Randolph Publishing Company |
| Jonathan Bagger | Johns Hopkins University |
| Dr. Chris Bebek | LBNL |
| Gabriel R. Bengochea | IAFE-UBA-CONICET |
| Dr. Chuck Bennett | Johns Hopkins |
| Prof. Gary Bernstein | University of Pennsylvania |
| Michael Blomqvist | Stockholm University |
| Prof. Sidney Bludman | Depto. de Astronomia, Universidad de Chile |
| Dr. James Braatz | NRAO |
| Dr. Sarah Bridle | University College London |
| Dr. Kenneth Carpenter | NASA's GSFC |
| Dr. Tracy Clarke | NRL/Interferometrics Inc. |
| Prof. Asantha Cooray | UC Irvine |
| Prof. Ruth Daly | Penn State University |
| Dr. Van Dixon | JHU |
| Mr. Duane Doles | Howard University (NSF Bridge to Doctorate, GEM Fellow) |
| Dr. Samantha Edgington | Lockheed Martin Space Systems |
| Dr. Daniel Eisenstein | Steward Observatory |
| Dr. Mike Fall | STScI/IAS |
| Ms. Wenjuan Fang | Physics Department, Columbia University |
| Dr. Henry Ferguson | STScI |
| Prof. Alex Filippenko | UC Berkeley |
| Ms. Ann Finkbeiner | freelance/JHU |
| Ms. Brenna Flaugher | Fermilab |
| Mr. Ryan Foley | UC Berkeley |
| Urbano Franca | IFIC - CSIC/Universidad de Valencia |
| Dr. Wendy Freedman | Carnegie Observatories |
| Dr. Andrew Fruchter | STScI |
| Ms. Cheryl GUNDY | STScI |
| Prof. Peter Garnavich | University of Notre Dame |
| Dr. Ben Gold | Johns Hopkins University |
| James Graber | LoC |
| Dr. Matthew Greenhouse | GSFC |
| Dr. Mike Hauser | STScI |
| Dr. Benne Holwerda | Space Telescope Science Institute |
| Wayne Hu | University of Chicago |
| Dr. Dragan Huterer | University of Michigan |
| Dr. Jai-chan Hwang | Kyungpook National University |
| Ms. Victoria Jaggard | National Geographic News |
| Prof. Bhuvnesh Jain | Univ. of Pennsylvania |
| Saurabh Jha | Rutgers University |
| Dr. Susan Kassin | Oxford University |
| Prof. Lawrence Krauss | Case Western Reserve University |
| Dr. Jeffrey Kubo | Fermi National Accelerator Laboratory |
| Mr. Tsz Yan Lam | University of Pennsylvania |
| Dr. Tod R. Lauer | NOAO |
| Dr. Mario Livio | STScI |
| Dr. Fred K.Y. Lo | NRAO |
| Zhaoming Ma | University of Pennsylvania |
| F. Duccio Macchetto | STScI |
| Adam Mantz | KIPAC |
| Dr. Morgan May | Brookhaven National Laboratory |
| Dr. Jeffrey Mirick | DoD |
| Warren Moos | Johns Hopkins University |
| Dr. Jon Morse | NASA |
| Dr. Matt Mountain | STScI |
| Dr. Ishwaree Neupane | Canterbury University |
| Dr. Jeffrey Newman | U. Pittsburgh |
| Dr. Hyerim Noh | Korea Astronomy and Space Science Institute |
| Dr. Antonella Nota | STScI |
| Dr. Rob Olling | University of Maryland |
| Linda Ostman | Stockholm University |
| Dennis Overbye | New York Times |
| Mr. Richard Panek | Author (Houghton Mifflin) |
| Prof. John Peacock | University of Edinburgh |
| Dr. Will Percival | Institute of Cosmology and Gravitation, Portsmouth |
| Dr. Saul Perlmutter | UC, Berkeley |
| Dr. Valeria Pettorino | Institute for Theoretical Physics, Heidelberg |
| Dr. Nor Pirzkal | STScI |
| Dr. Marc Postman | STScI |
| Tom Prince | Caltech/JPL |
| Dr. David Rapetti | KIPAC (SLAC/Stanford) |
| Dr. Anais Rassat | CEA/Saclay |
| Dr. Bernard Rauscher | NASA Goddard Space Flight Center |
| Dr. I. Neill Reid | STScI |
| Dr. Thomas Reiprich | Argelander Institute for Astronomy |
| Dr. Adam Riess | JHU/STScI |
| Dr. Massimo Robberto | STScI |
| Dr. Piero Rosati | ESO |
| Dr. Edward Ruitberg | NASA/GSFC |
| Dr. Shun Saito | University of Tokyo |
| Mr. Devdeep Sarkar | University of California, Irvine |
| Mr. Utane Sawangwit | University of Durham |
| Mr. Philipp Fabian Schalldach | TLS |
| Dr. Marina Shmakova | KIPAC, Stanford |
| Dr. Rachel Somerville | STScI |
| Dr. Yong-Seon Song | Institute of Cosmology and Gravitation, Portsmouth |
| Prof. Paul Steinhardt | Princeton University |
| Dr. Massimo Stiavelli | STScI |
| Dr. Mark Sullivan | University of Oxford |
| Dr. Nicholas Suntzeff | Texas A&M University |
| Dr. Nao Suzuki | Lawrence Berkeley National Lab |
| Dr. Kathleen Turner | U.S. Dept of Energy |
| Prof. Michael S Turner | Kavli Institute for Cosmological Physics |
| Prof. Tony Tyson | UC Davis |
| Mr. David Ventimiglia | Michigan State University |
| Prof. Licia Verde | Institute of Space Sciences, Bellaterra |
| Mark Voit | Michigan State University |
| Prof. Yun Wang | Univ. of Oklahoma |
| Dr. Scott Watson | University of MIchigan |
| Dr. Ed Witten | Institute for Advanced Study, Princeton |
| Dr. Michael Wood-Vasey | Harvard University |